{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3UG4641-1CS20","brand":"Siemens","brandSlug":"siemens","productSlug":"3UG4641-1CS20","canonicalUrl":"https://aoctrl.com/siemens/3UG4641-1CS20","factsUrl":"https://aoctrl.com/api/mcp/products/3UG4641-1CS20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3UG4641-1CS20 active power monitoring relay, cos phi detection, 0.2 … 10 A, 90 … 690 VAC, LCD display, snap-on mounting, IP20.","salesMarkdown":"The 3UG4641-1CS20: A built-in LCD display shows the measured parameters and configuration menus, making setup straightforward without external tools. The start-up delay is adjustable from 0 to 99 seconds, and an external reset input allows remote acknowledgment of trip conditions. The measurable current range of 0.2 to 10 A covers most motor and feeder circuits in industrial panels. The relay's output contacts are rated at 3 A at 250 V and 400 V (50/60 Hz), which is sufficient to drive a contactor coil or PLC input directly. For DC switching, the contacts handle 1 A at 24 V, 0.2 A at 125 V, and 0.1 A at 250 V — enough for pilot-duty signaling but not for heavy DC loads. The storage and transport temperature range of -40 to +85 °C ensures the part survives shipping and storage extremes.","metaTitle":"Siemens SIRIUS 3UG4641-1CS20 Active Power Monitoring Relay,","metaDescription":"Siemens SIRIUS 3UG4641-1CS20 active power monitoring relay with cos phi detection, 0.2-10 A, 90-690 VAC, IP20, snap-on DIN rail. Current lifecycle stage. Sourced to order against R","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Process / Temperature Controllers"],"specifications":{"1":"0.2 ... 10 A","2":"0.2 ... 10 A","Depth":"91 mm","Solid":"20 ... 14","Width":"22.5 mm","Height":"102 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Stranded":"20 ... 14","at 125 V":"0.2 A","at 250 V":"0.1 A","Backwards":"0 mm","Downwards":"0 mm","At The Side":"0 mm","Initial Value":"1","When Starting":"0 ... 99 s","During Storage":"-40 ... +85 °C","External Reset":"Yes","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +85 °C","Fastening Method":"snap-on mounting","Full-Scale Value":"1","Product Function":"Active power monitoring relay","Mounting Position":"any","Measurable Current":"0.2 ... 10 A","Product Brand Name":"SIRIUS","Between The Outputs":"Yes","Degree Of Pollution":"3","Product Designation":"Cos phi monitoring relay with digital setting","at AWG cables solid":"2x (20 ... 14)","protection class IP":"IP20","at 250 V at 50/60 Hz":"3 A","at 400 V at 50/60 Hz":"3 A","at 50 Hz rated value":"90 ... 690 V","at 60 Hz rated value":"90 ... 690 V","Design Of The Display":"LCD","at AWG cables stranded":"2x (20 ... 14)","Between Input And Output":"Yes","Relative Repeat Accuracy":"1 %","Accuracy Of Digital Display":"+/-1 digit","Relative Metering Precision":"10 %","Operating Voltage Rated Value":"90 ... 690 V","Overcurrent Detection 1 Phase":"Yes","Substance Prohibitance (Date)":"05/01/2012","Type Of Electrical Connection":"screw-type terminals","Type Of Current For Monitoring":"AC","Undercurrent Detection 1 Phase":"Yes","Control Supply Voltage Rated Value":"690 ... 90","With Lower Or Upper Limit Violation":"0.1 ... 20 s","operational current at 17 V minimum":"5 mA","Supply Voltage Frequency Rated Value":"60 ... 50 Hz","Surge Voltage Resistance Rated Value":"6 kV","With Degree Of Pollution 3 Rated Value":"690 V","due to burst according to IEC 61000-4-4":"2 kV","number of CO contacts delayed switching":"2","number of NC contacts delayed switching":"0","number of NO contacts delayed switching":"0","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²","Number Of Poles For Main Current Circuit":"2","Tightening Torque With Screw-Type Terminals":"1.2 ... 0.8 N·m","shock resistance according to IEC 60068-2-27":"sinusoidal half-wave 15g / 11 ms","Between The Voltage Supply And Other Circuits":"Yes","Type Of Voltage Of The Control Supply Voltage":"AC","operating frequency with 3RT2 contactor maximum":"5 000 1/h","vibration resistance according to IEC 60068-2-6":"1 ... 6 Hz: 15 mm, 6 ... 500 Hz: 2g","Adjustable Open/Closed-Circuit Current Principle":"Yes","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Buffering Time In The Event Of Power Failure Minimum":"10 ms","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Adjustable Switching Hysteresis For Measured Current Value":"100 ... 2 000 mA","Thermal Current Of The Switching Element With Contacts Maximum":"5 A","continuous current of the DIAZED fuse link of the output relay":"4 A","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes","Supply Voltage Frequency For Auxiliary And Control Circuit Rated Value":"50 ... 60 Hz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3UG4641-1CS20/alternatives.json"},"ai":{"faq":[{"question":"What is the measurable current range of this relay?","answer":"The relay measures current from 0.2 A to 10 A, covering most motor and feeder circuits in industrial panels."},{"question":"What supply voltage does the 3UG4641-1CS20 operate on?","answer":"It operates on 90 to 690 V AC at both 50 Hz and 60 Hz."},{"question":"What are the output contact ratings?","answer":"The output contacts are rated 3 A at 250 V AC and 400 V AC (50/60 Hz). For DC loads: 1 A at 24 V, 0.2 A at 125 V, and 0.1 A at 250 V."},{"question":"How is the relay mounted and what is its size?","answer":"It snaps onto a standard 35 mm DIN rail (snap-on mounting). Width is 22.5 mm, height 102 mm, depth 91 mm. It can be mounted in any position."},{"question":"Does the relay have an LCD display and external reset?","answer":"Yes, it has an LCD display for configuration and readout, and it supports an external reset input."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3UG4641-1CS20","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3UG4641-1CS20 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}